Which expression is equivalent to this number

28 19/100

A. 20 + 8 + 0.1 + 0.09

B. 2 + 8 + 0.01 + 0.09

C. 20 + 8 + 0.1 + 0.9

D. 2 + 8 + 1 + 9

The correct answer is A.

This is because the whole number 28 has a 2 in the tens place, meaning it has 2 tens, and 10x2=20. Same goes for the 8 in the ones place (8x1=8)

20+8=28. Then, 19/100 is equal to 0.19, which has a 1 in the tenths place and a 9 in the hundreths place put together to get 28.19